VS
Name
—
Na₂B₄O₅(OH)₄·8H₂O
Formula
—
Mineral Species
Entry type
—
Borates
Chemical class
—
Monoclinic
Crystal system
—
2–2.5
Mohs hardness
—
1.715
Specific gravity
—
White
Streak
—
Vitreous to resinous, may be earthy
Luster
—
{100}, perfect; {110}, less perfect; {010}, in traces
Cleavage
—
C2/c
Space group
—
—
Structural group
—
Brx · Grandfathered
IMA
—
0
Named in
—
Colorless, White, Gray
Typical colors
—
Na · B · O · H
Elements
—